dahfizz

35 ms·

361.
by dahfizz 4y ago
Do you have any more info on this? The text of IEEE 754 costs $100 and I can't find any reference to it on Google
362.
by dahfizz 4y ago
Which decimal? Fixed point, or floating point? Should the numerator and denominator be given the same bit width? How do you deal with overflow and underflow? Its easy to think of "decimal" as one thing because every language provi
363.
by dahfizz 4y ago
> you trust a tool like a calculator to give you the right answer. By middle school, kids should have learned that you can't trust calculators. There are all sorts of numbers like pi, e, sqrt(2) that are impossible to represent. Onc
364.
by dahfizz 4y ago
Not at far as I know. That would require everyone to agree on one binary representation, which hasn't happened. There are tons of different fixed-point implementations out there, each with different tradeoffs. Choosing one implementati
365.
by dahfizz 4y ago
> a value in binary, a decimal places value, whatever odd logic there is required to hide the leaky abstraction. Ironically, this is a much better description of `decimal` than of `float`. IEEE float math is done in hardware. It is &quo
366.
by dahfizz 4y ago
Energy is energy. Regardless of what the source is, or how long the source runs, etc etc the amount of energy needed to heat the home is constant. So what matters when comparing options is the cost of a unit of heat energy ($/kwh). OP
367.
by dahfizz 4y ago
> Hiring theoretically permanent employees in response is simply bad judgement. This is not self-evident. Hiring the salaried employees over 2+ years could very well be cheaper than contractors. If they had under-hired during to boom, t
368.
by dahfizz 4y ago
I don't understand this position. You imply that any layoff is a fundamental and serious mistake. Zoom's revenue grew like 10X over the past two years. They had a legitimate need to hire and grow the business, and now the market h
369.
by dahfizz 4y ago
Why? Because the CEO did his job and made the stock price go up?
370.
by dahfizz 4y ago
Looking at municipal water usage per capita, US uses 175.9 m3 per capita Germany uses 236.5 m3 per capita Czechia uses 57.5 per capita So individuals in America (i.e. showering) do not use abnormally high amounts of water. The country in
371.
by dahfizz 4y ago
Sure, but calling malloc at runtime is slow and maintaining an allocator isn't very useful if you can just restart the app every night. YAGNI ;)
372.
by dahfizz 4y ago
Because the memory fills up. You pre-allocate a million orders, and send 800k orders a day, leaving only 200k free slots. You're going to run out mid day tomorrow if you don't restart.
373.
by dahfizz 4y ago
If anyone is wondering, this is not a joke. Some of the trading systems I've worked on were designed to be restarted every night. The memory didn't "leak", but was designed this way - preallocate all the memory you could
374.
by dahfizz 4y ago
Nobody just presses "start" on their trading algo and takes a nap the rest of the day. Even market makers, who have a simple and easily-automatable trading strategy, have a team of traders constantly tweaking the parameters to the
375.
by dahfizz 4y ago
I don't see transaction fees as fundamentally different than any other cost to the business. Do consumers also need to know how much the business pays in electricity, or the rent the business pays?
376.
by dahfizz 4y ago
"Dead weight loss" is an economic term. It sounds like a generic English phrase but it has a very specific meaning and formula. [1] if you are interested. Particularly the section on the dead weight loss of taxes - in this case, t
377.
by dahfizz 4y ago
Well, unsurprisingly, the US military knows more about this than you. Multiple planes and over a thousand rounds is not enough to bring down a much smaller balloon[1]. Not to mention, a leaky balloon will fall slowly, making it an obstacle
378.
by dahfizz 4y ago
Did you watch the video? The payload clearly falls as one, intact piece. Its not like they blew it up with a nuke.
379.
by dahfizz 4y ago
Yup. Instead, China chose to escalate. What do the apologists think of this? [1] https://apnews.com/article/politics-united-states-government...
380.
by dahfizz 4y ago
Life isn't a marvel movie. There are no good guys and bad guys. The USA doesn't have to be "good" for China to be "bad".
381.
by dahfizz 4y ago
You can't just put hydrogen in a tank like you can with i.e. propane. It's a real pain to deal with, and I don't think grid scale hydrogen will ever work out. It would make more sense to use the hydrogen to synthesize methane
382.
by dahfizz 4y ago
Yeah, that makes total sense. For me, the extra mental of thinking about when to charge something and when to pay it off just isn't worth $60/yr. Counter-factually: If autopay didn't exist, I would gladly pay $5/mo to ha
383.
by dahfizz 4y ago
You literally have to sign a paper which states the total cost of the loan to buy a car on credit. How could it be _less_ opaque?
384.
by dahfizz 4y ago
The #1 feature of a CC is the fraud protection. If my credit card gets stolen, the criminal has access to the bank's money. If my debit card gets stolen, the criminal has access to my money.
385.
by dahfizz 4y ago
This is the way. A Credit Card is just a Debit Card, but with rewards and better fraud protection.
386.
by dahfizz 4y ago
Just put it on autopay. Once a month the whole balance gets paid off. Does your arbitrage strategy really make enough money to make it worth it? Personally, I am not going to stress about a few extra bucks by leaving the money in a 3% HYSA
387.
by dahfizz 4y ago
I doubt it would make much of a difference. The kids with the wherewithal to take and pay attention to a finance course would be able to figure out "high interest debt = bad" on their own. The other kids wouldn't pay attentio
388.
by dahfizz 4y ago
How does your employer pay you if they don't take money from anyone?
389.
by dahfizz 4y ago
The key to being a developer in finance is to work in a software shop. Working at a bank / prop firm is going to be extremely stressful. Working at the shop that all the big banks buy their trading software from is like 80-90% of the p
390.
by dahfizz 4y ago
That would be cool. I've been looking for a way to have to re-download a game every time I play it. And native games just run at way too high an FPS...

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